armannsfell and the clear blue water in the north atlantic rift, pingvellir, iceland

armannsfell atlantic basalt chasm cold crack cracked crevasse crevice deep depth destinations dive diving earthquake europe extreme fault geological geology geothermal heritage history horizontal iceland landmark landscape lava line mid mountain national nature nordic outdoors overcast park pingvellir place popular ridge rift rock rupture scenic scuba section seismic site sunlight terrain thingvellir tourism tourist traditional travel underwater valley volcanic water western